search for: ychen

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2007 Jun 01
1
Calling C routine in anther package in C code (R_RegisterCCallable)
...uot;, pkg, lib) } ====================== I can compile this using R 2.5.0 under Linux. But I got the following error when I tried to load the library >library(dummy): Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/homes/ychen/Rlibs/dummy/libs/dummy.so': /homes/ychen/Rlibs/dummy/libs/dummy.so: undefined symbol: _Z19R_RegisterCCallablePcS_PFPvvE Error in library(dummy) : .First.lib failed for 'dummy' Can anyone help me out? Thanks! Alex [[alternative HTML version deleted]]
2020 Sep 07
2
New PM for target-specific pre-isel IR passes
Hi, Is there a mechanism in place to use the new pass manager with target-specific passes added (at the moment) via addIRPasses in TargetPassConfig? I did see any code related to that, did I miss something? Is it in plan? -- Krzysztof Parzyszek kparzysz at quicinc.com AI tools development
2020 Jul 22
6
New pass manager for optimization pipeline status and questions
Hi all, I wanted to give a quick update on the status of NPM for the IR optimization pipeline and ask some questions. In the past I believe there were thoughts that NPM was basically ready because all of check-llvm and check-clang passed when -DENABLE_EXPERIMENTAL_NEW_PASS_MANAGER=ON was specified. But that CMake flag did not apply to opt and any tests running something like `opt -foo-pass
2002 Apr 18
1
About duplicates
Dear Sir: I am learning R and found it interesting and useful. However, I have a problem here. If I got duplicates in my dataframe, how can I get rid of those rows? I couldn't find a suitable function for that. In SAS, the internal code will help. How about R? Thanks for your attention. Sincerely, Yu-Yun Chen -------------- next part -------------- An HTML attachment was scrubbed...